Barbour County index. [volume] (Medicine Lodge, Kan.) 1880-current, 1887-12-21
MECHANICAL MITES.

An alloy composed Of copper, Is parts;
tin, 2.34; lead l.s2 and one part of anthony
Is said to be capable of resisting the action
Of acids and alkalies.
THE tin plate industry is now consuming
100000 tons Of English iron and steel a year,
that would be useless for the purpose if it
were not coated with tin.
THE art of paper making has reached a
point where a growing tree may be cut
down, made into paper, and turned out as a
newspaper, all within thirty-six hours.
ROLLING out iron chains from the solid bar
without welding is one of the recent me
chanical operations that have attracted at
tention. The principle of forming the roll
ers and the process Of rolling out chain is
similar in some respects to the method en-
Ployed in casting the links and having them
come out together in "a chain from a mold
An article called flexible glass is now
made by soaking paper of proper thickness
IN copal varnish, thus making it transpar-
ent, polishingit when dry. and rubbing il
with pumice stone A LAYER of soluble glass
Is then applied and rubbed with salt. The
surface thus produced is said to be as per
feet as that of ordinary glass.
Historic documents show that tin Mate
was known at the time of the wars of Alex
ander the Great in the Indies Herodotus.
400 years before Christ. DiOdorous Siculus.
Aristotle and Pliny, all speak of tin and the
use Of It for preserving iron The tin WAS
extracted from the mines of Sets and st
MichaelE Mount, and brought to the shores
OF the Channel 10 be carried through Gaul to
Massilia ,Marscilles)
THE extensive railway system of the
United States will this year REQUIRE CO..
OO.OOo ties for repairs, and as the lines are
yearly extended the number required for
this purpose will be increased. Expressed
IN board measure, this represents about
2,l60mO.OO feet. The supply is limited TO
special kinds of woods, and ties are chiefly
cut from trees ten To twelve inches in diam
eter and from thirty to sixty years old.
a PROMINENT mechanical engineer savs
she metal of the future is aluminium. and
that in few years it will displace iron and
steel, and revolutionize the industrial arts.
he says the world contains ten times as
much OF IT as of iron - every clay bed being
an aluminium mine II is three times strong
er than Besscmer steel. and will not cor
rode, IT is very ductile, is a third lighter
than cast-iron, and the raw materials for
making il are cheap.
A DURABLE dead polish is obtained in tenn
pered steel by first smoothing the steel sxr-
face with an iron polisher and some DOW
dered OIL stone, carefully washing and rims
ing. Then mix in small vessel some
fresh oil and powdered oil stone. dip into
this mixture the end of piece of elder
pith, and polish the steel surface with a
gentle pressure, cutting OF TIE end of the
pith as II com ences TO become soiled. In
conclusion, it should be thoroughly cleansed
in soft water.
A LATE improvement in the construction
AZ - . -.
pneumatic tubes for sending letters and ma
pers TO the upper stories. They are light.
cheap, easily adjusted or repaired, and are
made after the manner followed in the man.
ufacture Of fireworks. They are rolled
from sheets, and while the rolling is in
progress are treated with asphalt. When
complete theJ are lined with an insoluble
enamel 1t is thought they win eventually
supercede lead and iron pipes.